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Partial Mash World Heritage Range - San Francisco Steam Beer

Dark Rock Brewing

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Partial Mash World Heritage Range - San Francisco Steam Beer
24.95 In Stock

Availability: In stock

Dark Rock San Francisco Stream Beer is a "Californian Common beer". It is a throwback to the prohibition days when beers such as Anchor Steam were cooled on brewery rooftops in San Francisco. Steam Beer is a rich amber colour with a silky Mouthfeel, achieved from Vienna, Crystal and Chocolate malts. These are matched with  Chinook hops to provide the background hop flavour and aroma. The clean finish is produced by fermenting lager yeasts at higher temperatures. 

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What is it?

Dark Rock Brewing's San Francisco Steam Beer is a  premium partial mash kit.  Everything you need to make a superb ale is included in the box (except water). Partial mash brewing is an easy process. It takes a little longer than making a standard beer kit but the results are absolutely stunning. Partial mash brewing really allows you to master your craft. It is fun and you are much more involved in the brewing process, allowing you to develop your skills. The quality of the commercial grade malt extract used in this kit is so good it is difficult to distinguish the beer from an all grain recipe. The San Francisco Steam Beer is part of Dark Rock Brewing's World Heritage Range. A rich, amber beer with a silky mouthfeel is achieved from  Vienna, Crystal and Chocolate malts. These are matched with Chinook hops to provide the background hop flavour and aroma. This top of the range kit will produce a beer that you can be proud of. No compromise has been made on quality and only the freshest hops and malts have been selected. The kit also includes a sachet of Pure Brew water conditioner and yeast enhancer to ensure a pure commercial taste is achieved. Starbrite finings are also included. The kit is suitable for vegans as it contains no animal-based products. The San Francisco Steam Beer produces 40 pints of beer with a target alcohol content of 5.4% ABV (approx)

The Dark Rock Brewing World Heritage range allows you to master your craft and brew beers which are close to classic styles from around the world. Iconic favourites and traditional styles sit alongside new emerging flavours from developing regions. Dark Rock Partial Mash Beer kits contain only the finest quality ingredients and easy to follow step-by-step instructions. They are comprehensive and complete premium beer kits that have 3.5kg of commercial grade malt extract as a backbone. This is matched to perfectly crushed malts and the freshest hops packed in nitrogen flushed vacuum packs. The result is the highest quality beer kits ever produced!

Each Dark Rock kit is carefully researched and developed by commercial brewers with extensive knowledge and a passion for craft beers and real ales. Dark Rock Kits enable you to produce commercial quality beers, all within the comfort of your own home. Malts and hops are added at controlled stages of the brewing process to provide rich aromas and depths of flavour which are simply not possible from standard hopped malt extract kits.

What is Steam Beer?

Steam Beer is also known as California Common. It is a hybrid style unique to the US. It's usually brewed with a special strain of lager yeast that works better at warmer (ale-like) temperatures. This method dates back to the late 1800s in California when refrigeration was a great luxury. The term Steam Beer emerged from the steam that could be seen rising from the Anchor Brewery roof. The cold foggy atmosphere in San Francisco was ideal for cooling the beer which was stored in tanks on the brewery roof. Stem Beer has a real toasty/malty backbone, with a fairly bold hoppiness in flavour and aroma and a high level of carbonation. Steam beers are generally clear and crisp like a lager, but also full-bodied like an ale.

World Heritage Range

World Heritage Kits allow you to master your craft, and brew beers which are close to classic styles from around the world. Iconic favourites and traditional styles sit alongside new emerging flavours from developing regions. No compromise has been made in developing the World Heritage range. The range is constantly being expanded as we explore the continents to find new exciting styles and flavours.

What makes the Dark Rock Partial Mash range so special?

Most economy beer kits are supplied with 1.5kg of malt, or up to 1.8kg for standard kits. Many brewers now prefer to pay a little extra for boxed premium kits, which tend to include 3kg malt. The higher the malt content, the better the body and taste will be. You really do get what you pay for in this respect. Dark Rock Partial Mash kits contain a whopping 3.5kg of malt extract and that is without counting the malt grains! This puts them ahead of the pack in terms of malt content and gives the beer a massive quality advantage. Couple that with a really generous quantity of the freshest and best quality hops, and you have a beer which is pretty much impossible to beat without heading into all grain mashing territory. Even the most avid all grain aficionados supplement their stocks with Dark Rock Partial Mash beers. The reason they give is that the quality is right up there and the brewing time and complexities are greatly reduced.

What's included?

  • 3.5kg Premium Brewery Quality Liquid Malt Extract
  • Genuine Brewer's Yeast Sachet
  • Malt Grains
  • Chinook Hop Pellets 
  • Pure Brew (water treatment and nutrient)
  • Britewort clarifier
  • Muslin straining bag
  • Starbrite Beer Finings (Vegan-Friendly)
  • Fermenter and keg ID stickers
  • Full instructions

Allergy Advice: May include barley and other cereals, containing gluten


  • Makes: 40 pints / 5 gallons
  • ABV Approx: 5.4%
  • Target Finishing Gravity: 1.014 (approx)
  • Fermentation time: 10-14 days approx
  • Conditioning time: 4 weeks minimum (it will mature further if left longer)

What equipment do you need?

Basic beer making equipment (5g fermenter, airlock, syphon tube with sediment trap, hydrometer, Suresan sanitiser, bottles or barrel). These are available under the starter kit section on this website. You will also need a stainless steel pan (15 litres minimum capacity), and a thermometer


A sachet of Pure Brew is included with this kit in order to achieve a commercial quality. Pure Brew is a professional beer enhancer. It feeds the yeast with essential nutrients, which supercharge the fermentation and support yeast development (even in limited oxygen conditions). Pure Brew also treats brewing water to eliminate problems caused by Chlorine and Chloramine (which can create a medicinal or as it is sometimes referred to, a "homebrew" taste) The condition of brewing water is critical to achieving optimum results but this important area is often overlooked. By using Pure Brew, you can effectively and easily condition brewing water, and maximise effective fermentation. We strongly recommend using Pure Brew with all of your beers to improve their quality.

The addition of beer finings will improve the final quality of your beers. Starbrite finings are included with this kit. They will help your beer to clear quickly and the sediment will be more likely to stay at the bottom of bottles or barrels. If you are using Corny Kegs then it is important to clear the beer as much as possible before kegging. Beer Finings will promote a faster and more efficient fall out of sediment and haze particles prior to kegging. Harris Starbrite is a highly effective vegan-friendly beer fining, which is rapidly becoming a firm favourite with home brewers. It is suitable for all beers.

A muslin grain bag is included with this kit. You could consider investing in a metal hop spider to upgrade your equipment. The hop spider would sit inside your boiling pan and allow you to drop hops into the pan in a controlled way. Hop Spiders allow hops to boil with more free flow space around them. They are easily cleaned and can be re-used over and over again.